[PATCH v1] crypto: caam - set hwrng quality level
From: Oleksij Rempel <o.rempel@pengutronix.de>
Date: 2017-07-19 07:45:26
Also in:
lkml
Subsystem:
crypto api, freescale caam (cryptographic acceleration and assurance module) driver, the rest · Maintainers:
Herbert Xu, "David S. Miller", Horia Geantă, Pankaj Gupta, Gaurav Jain, Linus Torvalds
According documentation, it is NIST certified TRNG. So, set high quality to let the HWRNG framework automatically use it. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- drivers/crypto/caam/caamrng.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
index 41398da3edf4..684c0bc88dfd 100644
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c@@ -292,10 +292,16 @@ static int caam_init_rng(struct caam_rng_ctx *ctx, struct device *jrdev) return 0; } +/* + * hwrng register struct + * The trng is suppost to have 100% entropy, and thus + * we register with a very high quality value. + */ static struct hwrng caam_rng = { .name = "rng-caam", .cleanup = caam_cleanup, .read = caam_read, + .quality = 999, }; static void __exit caam_rng_exit(void)
--
2.11.0